To what extent does my app need to be an Expo app before I can use a feature like SecureStore (and other things listed under the SDK API Reference at API Reference - Expo Documentation).
Is it sufficient that I install the expo module, and use the SDK fork of react-native? Or do I also need to follow the steps under “Converting an existing app to work with Expo” at GitHub - expo/xde: The Expo Development Environment
Do I need something like…
AppRegistry.registerComponent(‘main’, () => MyRootComponentName);
Or maybe the “Converting an existing app” steps aren’t needed for CRNA apps, because a CRNA app is already similar enough to an Expo app?